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ISL9120 Low Power Buck-Boost Regulator

Renesas Electronics ISL9120 Low Power Buck-Boost Regulator is a highly integrated DC-DC switching regulator that accepts input voltage above or below the regulated output voltage. The ISL9120 automatically transitions between buck and boost modes without significant output disturbance. The ISL9120 also has automatic bypass functionality. When the input voltage is generally within 1% to 2% of the output voltage, there will be a direct bypass connection between the V_IN and V_OUT pins. In addition to the automatic bypass functionality, the ISL9120 has forced bypass functionality using the BYP pin.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Mounting Style	Package/Case	Topology	Output Voltage	Output Current	Number of Outputs	Quiescent Current	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
	Switching Voltage Regulators High Efficiency Buck -Boost Regulator, A ISL9120IIAZ-T Renesas / Intersil 1: CHF 1.40 1’587In Stock 6’000Expected 11/5/2026	Mfr. Part No. ISL9120IIAZ-T Mouser Part No 968-ISL9120IIAZ-T	Renesas / Intersil	Switching Voltage Regulators High Efficiency Buck -Boost Regulator, A Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	1’587In Stock 6’000Expected 11/5/2026	Cut Tape CHF 1.40 CHF 1.03 CHF 0.934 CHF 0.829 View Reel CHF 0.727 CHF 0.785 CHF 0.755 CHF 0.751 CHF 0.727 MouseReel Available	Min.: 1 Mult.: 1 : 3’000			SMD/SMT	WLCSP-9	Buck-Boost	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Hi-Eff Buck/Boost Re j, 3x3 WLCSP ISL9120IIAZ-T7A Renesas / Intersil 1: CHF 1.71 616In Stock	Mfr. Part No. ISL9120IIAZ-T7A Mouser Part No 968-ISL9120IIAZ-T7A	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re j, 3x3 WLCSP Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	616In Stock	Cut Tape CHF 1.71 CHF 1.24 CHF 1.12 CHF 1.00 Reel CHF 0.926 View CHF 0.877 CHF 0.854 CHF 0.821 CHF 0.813 MouseReel Available	Min.: 1 Mult.: 1 : 250			SMD/SMT	WLCSP-9	Buck-Boost	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 WLCSP ISL9120IINZ-T7A Renesas / Intersil 1: CHF 1.76 11In Stock 250Expected 3/15/2027	Mfr. Part No. ISL9120IINZ-T7A Mouser Part No 968-ISL9120IINZ-T7A	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 WLCSP Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	11In Stock 250Expected 3/15/2027	Cut Tape CHF 1.76 CHF 1.24 CHF 1.12 CHF 1.00 Reel CHF 0.934	Min.: 1 Mult.: 1 : 250			SMD/SMT	WLCSP-9	Buck-Boost	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape
	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN ISL9120IRTNZ Renesas / Intersil 1: CHF 2.18 13’700On Order	Mfr. Part No. ISL9120IRTNZ Mouser Part No 968-ISL9120IRTNZ	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	13’700On Order On Order Ship Dates Mfr. No: ISL9120IRTNZ Stock: 0 On Order: 3’900 Expected 5/10/2027 3’920 Expected 5/24/2027 5’880 Expected 5/31/2027 Factory Lead Time: 34 Weeks	CHF 2.18 CHF 1.56 CHF 1.41 CHF 1.24 View CHF 1.13 CHF 1.10 CHF 1.08 CHF 1.05	Min.: 1 Mult.: 1			SMD/SMT	TQFN-EP-12	Boost, Buck	3.3 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Tray
	Switching Voltage Regulators High Efficiency Buck-Boost Regulator, Adj, 3x3 TQFN ISL9120IRTAZ-T Renesas / Intersil 1: CHF 2.18 5’941Expected 1/27/2027	Mfr. Part No. ISL9120IRTAZ-T Mouser Part No 968-ISL9120IRTAZ-T	Renesas / Intersil	Switching Voltage Regulators High Efficiency Buck-Boost Regulator, Adj, 3x3 TQFN Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	5’941Expected 1/27/2027	Cut Tape CHF 2.18 CHF 1.56 CHF 1.41 CHF 1.24 View Reel CHF 1.05 CHF 1.18 CHF 1.12 CHF 1.10 CHF 1.05 MouseReel Available	Min.: 1 Mult.: 1 : 3’000			SMD/SMT	TQFN-EP-12	Boost, Buck	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Buck-Boost Reg ISL9120IRTAZ-T7A Renesas / Intersil 1: CHF 2.46 3’000On Order	Mfr. Part No. ISL9120IRTAZ-T7A Mouser Part No 968-ISL9120IRTAZ-T7A	Renesas / Intersil	Switching Voltage Regulators Buck-Boost Reg Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	3’000On Order On Order Ship Dates Mfr. No: ISL9120IRTAZ-T7A Stock: 0 On Order: 250 Expected 1/20/2027 750 Expected 2/2/2027 2’000 Expected 3/8/2027 Factory Lead Time: 34 Weeks	Cut Tape CHF 2.46 CHF 1.82 CHF 1.60 CHF 1.42 Reel CHF 1.35 MouseReel Available	Min.: 1 Mult.: 1 : 250			SMD/SMT	TQFN-EP-12	Boost, Buck	1 V to 5.2 V	800 mA	1 Output	41 uA	- 40 C	+ 85 C	ISL9120	Reel, Cut Tape, MouseReel
	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN ISL9120IRTNZ-T Renesas / Intersil 1: CHF 1.97 1’750Expected 1/20/2027	Mfr. Part No. ISL9120IRTNZ-T Mouser Part No 968-ISL9120IRTNZ-T	Renesas / Intersil	Switching Voltage Regulators Hi-Eff Buck/Boost Re 3V, 3x3 TQFN Learn More about Renesas / Intersil renesas isl9120 buck boost regulator	Datasheet	1’750Expected 1/20/2027	Cut Tape CHF 1.97 CHF 1.46 CHF 1.33 CHF 1.19 View Reel CHF 1.03 CHF 1.12 CHF 1.09 CHF 1.05 CHF 1.03	Min.: 1 Mult.: 1 : 3’000			SMD/SMT	TQFN-EP-12	Boost, Buck	3.3 V	800 mA	1 Output		- 40 C	+ 85 C	ISL9120	Reel, Cut Tape